Machine for cutting soles



E L. PATTEN.

MACHINE FOR cunme SOLES. I APPLICATION FILED NOV-7.1919. 1 418,604, PatentedJune 6, 1922.

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MACHINE FOR CUTTING SOLES.

APPLICATION FILED NOV-7,1919.

Patenteu June 6, 1922.

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MACHINE FOR CUTTING SOLES.

APPLICATION FILED NOV-H1919.

1,418,604.- v PatentedJune 6,1922.

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um'rnp s'rA'ri-is 351cm oFFl-cE- ERNEST L- PATTEN', OF MALDEN, MASSACHUSETTS, ASSIGNOR TO WELLMAN COMPANY,

' v A CORPORATION OF MAINE.

MACHINE FOR C'PTTING SOLES.

To all whom it may concern Be it knownthat I, ERNEST L. PATTEN, a citizen of the United States, residing at Malden, county of Middlesex, and'State of Massachusetts, have invented a certain new and useful Machine for Cutting Soles, of which the following is a full, clear, and exact description. I

This invention relates to machines for cutting sheet material and especially sheet rubher in any desired pattern and preferably with a beveled. edge.

It generally aims to include the mechanism disclosed in my prior Patents Nos. 1,144,429 and 1,270,319, granted June 29, 1915, and June 25, 1918, respectively, in which for one thing the frame of the ,ma-

, chine, carrying a knife, form, leader and ;other associated parts and their driving mechanisms, is shifted relatively to a stationary work table in order to facilitate the introduction of work. The relative great Weight of .the frame and associated parts of my prior machines makes their movement or shifting objectionable and undesirable.

The present invention aims primarily to avoid this by a combination and arrangefment of parts in which a relatively light table isshiftable to and from the form and provide means for reliably stamping the-maknife for facility in introducing work.

H Another object of .the invention is to pro vide an improved arrangement of starting levers making the operation of the machine more convenient.

Still another object of the invention is to the machine whenever it is desirable to run the knife around the form by hand instead of by power.

The invent1on-further aims to provide a new and improvedmeans for locking a leader in position andalso for preventing the knife carrying means from tilting durin a cutting operation. 7 I

n the preferred form of the machine the work is supported on a table which is raised to grip and hold it against the form while a knife is swiftly swiped around the form in Speciflcation'of Letters Patent. Patented J 6 1922 I Application filed November 7, 1919. Serial No. 336,414.

a path approximating the leaders outline and governed by a shiftable carrier and by low the form and. is adapted'to'be raised into eo-operative gripping relation there-'- with by a series of links and levers extend: ing to a foot tre'adle which is preferably;

The work table is normally held spaced from beprovided with a member extending laterally,

over a second and. independent foot treadle 3 that governsthe operation of a power'clutch through which the machine is power driven. The work table comprises a platform whichis bolted to a post slidable in the frame and a table which is secured to the platform'by a number of screws that are arranged to permit the plateto be positioned in parallelism with the lower face of the form. A platen is carried by the work table and co-operatesv with the stamp or die on the lower face of the form. I

The preferred embodiment of the invention is illustrated in the accompanying drawings in which:

Fig. 1 is 'a side elevation, of the upper part of a. machine of the preferred form.

Fig.2 is a front elevation of the same partly "in section.

Fig. 3 is a side elevation of the lower part of the frame of the machine.

Figs. 4 and 5 are details in plan and front end elevation respectively of one side of a leader and its carrier showing an improved spring detent for locking them together. 7 Fig. 6 shows a one way clutch partly in section.

Fig. 7 is a View of aform having a stamp or die on its lower face and shows the ar-' mentioned patents, and reference is now made thereto for a full, understanding of de- 1s mounted a pair of friction rollers 42 opertails of construction that are not herein sufficiently made clear.

' Sheet material 1 with an underlying cutting sheet 2 supported on a work table 3 is gripped and held against a form 4 detachably or otherwise secured as indicated at 5 to a bracket arm 6 which is bolted to an overhanging portion 7 of a frame indicated generally by the numeral '8. A. knife 9-is adapted to be moved around the form incontiguity to its periphery. The knife 9 1s removably secured to an arm 10 pivoted-on the pin 11, which is carried by a plate 12 and a coiled spring 13, normally urges the knife toward the stop 14. Above the knife 9 an anti-friction roller 15 is mounted to take care of lateral'strain fesultin from the inclined cutting position bf the kink. Plate 12 is fixed in the lower end of a'spindle 16,

which is confined against endwise movement but rotatable in a carriage 17 slidably supported by a truck 18 provided with guide ways 19 confining the carriage 17 to rectilinear movement relative thereto.

The .plate '12 to 'oneside of the spindle 16 carries an upright pin 20. By. the spindle 16 and pin 20 pairs of friction rolls 2122 and 23-24 are supported in spaced relation range 25 of a leader 26 which is removably supported in a leader carrier 27 slidably sustained in a groove 28 providedin the arm 29 depending from the frame section 7. V The leader carrier is pinned;

at 30 to a pitman 31 which must be operated by an adjustable crank pin of the construc- 1 tion fully disclosed .in my prior Patent No. 1,270,319 above mentioned.

40, ceive the leader 26 as indicated in Figs. 4'

and 5 and is provided with a pluralityof The leader carrier 27 is undercuttol refiange-like fingers 32 which define with the overhanging portion of the "leader carrier a ideway for sustaining the leader26. To

v lock the leader andleader carrier together a resilient wire or spring 33fwhich is anchored at 34,150 the leader carrier is passed through a pin 35 sleeved'in an apertured stud 36 suitably secured to the leader carrier, provision being madee for perpendicular move-.

ment of the spring 33 and the pin 35 by slottingthe stud 36 as indicated at 37. It will be understood that th spring detent thus constituted is operable transversely of the leader in a substantially perpendicular direction into and out of anopenlng (not shown) in the leaderplate toefiecta looking or unlocking of the same with relation to the leader carrier 27. V

Abovethe leader is a second shiftable member dr head 38 which is pinned at 39 to a pit'man 40 that is adapted to be reciprocated by' an adjustable crankpin as more fully disclosed in my prior Patent No.

1,270,319( The shiftabl head at is provided with an endless groove 41 and in this groove atively'connected to the truck 18 and confined between the plates 43 and 44 the latter of which 'is preferably integral with the truck 18, see Figure 8. The upper plate 43 is connected by a 'link 45 to an endless chain 46 engaging sprocket wheels 47 and 48, Fig. 1,

the latter of which is driven through bevel gearing 49 which in turn is operated by a shaft 50 driven through a telescoping sleeve 51 constituting the main shaft of the ma chine.

To one side of the endless-groove 41 in "ents with the exception of the plate 52'which steadies the anti-friction roll 54.

It will be understood that when the main shaft 51 is driven, that the truck 18 is carried around the endless groove 41- and that while it moves in this predetermined path,

that the knife 9 is dragged around with'it and describes a path determined approximately by the sinuous flange 25 of the leader plate which is engaged by the opposed pairs of friction rolls 21-22 and 23-24.-

,80 the upper shiftable head 38 and encircling Preferably the throw of the leader carrier is varied with every change in the size of the sole to be cut, but the shiftable head 38 need have its throw vari dbut three times. This is effected. as 'more ully disclosed in my prior Patent 1,270,319 through the ad- 'justable crank pin actuating the pitman 40,

it being set toa zero position to,hold the fhead'38 stationary for womens soles, with av minus throw forchildrens or misses soles i. e., to move it ina. direction opposite to that in which the knif carriage is movedand with a plus throw for mens soles, so as to add its throw to'that of the knife carrier. It is also to be understood that the leader carrier 27 and head 38 are both shifted at the same time excepting of course when womens soles are being cut and-the latter is held stationary. 1 1

"The coil spring 13 which yieldingly urges the arm lO against the form4 and toward the stop 14 permits the knife to yield in,

stead of digging into the form 4 whenever in the operation of t lie machine vibration carries the knife edge 9 against it. g

The mainshaft 51 of the machine carries a sprocket. wheel 55 which is rotated by chain 56 in engagement with an adjustable L In treadle 84 after the stop 88 prevents further upward movement of the work table. It is also to be understood that the stop bolt 88 is preferably adjusted for a given thickness of stock so as to-grip the material against the form 4 just tight enough to prevent it from shifting during the cutting operation and no more.

'Difi'erent thicknesses of sheet stock will require a different amount of localized pressure to effect a stamping or dieing thereof with a desired character and to this end the platen 96 is conveniently-adjusted. through the screws 99-99. 1

The anti-friction'roll 54, offset to one side of the tracking r'olls42, which are connected to the truck 18, is confined between the parallel faces of the head 38 and plate 52 to prevent tilting of the truck either upward or downward 'and thereby betters ,the operation of the knife in traveling around the form making it steadyin its inclined cutting positionwhich causes a not inconsiderable lateral strain.

The s ring detent for locking the leader 26 to t e leader carrier 27 is also an *improved feature of the present invention-be mg quite simple and reliable in construction and operation.

Having thus described my invention, what I claim and desire to protect by Letters .Patent is;

1. In a machine of the type described, a

. stationary frame carrying a form, a knlfe --placeably mounted in the frame, meansand means for moving the knife around the form, in combination with a work table dislimiting movement of the work table toward the form, and means including a lost motion connection whereby the work table maybe I displaced.

2. In a machine for cutting sheet material, in combination, a knife, a form, a leader provided with a hole adjacent one edge thereof, a leader carrier removably sustaining the leader, means for actuating the leader carrier'and' knife to move the latter around the leader, said leader carrier being with an opening in register wit said hole adjacent one edgeof the leader, and a.detent sustained in the hole in the leader carrier and-movable transversely of the leader'into the. registering openings/whereby the leader, may be conveniently locked to the leade w;

carrier.

in combination, a work table, a form, a

3., In a machine for cutting. sheet leader spaced'from the form to the side "option of theknife as desired.

provided I .of" October, 1919. A v

- ERNEST L. PATTEN.

lastname-d means including a truck con-' fined to follow a predetermined path, a shiftable head provided with a guiding groove for said-truck, a guiding memberon said truck arranged to travel in said position during the operation of groove,

a roller on said truck to 'one side of the guidmg member, and a plate sup orted in spaced re a tion from and by the shiftable head for. confining the roller against dis lacement relative to the plane ofthe shiftab e head.

5.; In a machine for cutting sheet material, in combination, a form, a work table, means whereby the form and work table may be relatively shifted, a knife, mechanism for moving the knife around-theform, and drivlng mechanisms bperatively connected topower "and hand operable devices, said mechanisms; including a one way clutch arranged to permit manual or power opera- 6. In' a machine for cutting sheet material, in combination, a form, a work table, means for shifting the work table relative to the form, a knife, means for moving the knife around the. form, power driven devices for operating the machine, and a manually operable mechanismincluding a'fone way clutch inefiective when the :xn'achine is driven by power.

.7. In a machine for cutting sheet material, in, combination, a form, a work table, means for relatively shifting the formand work table to facilitate the iIltIOdllCtlOlhflfWOIk a knife, means for moving the knife around the form, and driving'imechanisinincluding a main shaft, anoendless transmiwion' device for driving the main shaft, a one way clutch in operative engagement with said endless transmis'slon devlce, and devices-capable of Signed at Men rdines, this 29th day power and hand operation enablingcthe ma- J chinetobe operated at will by either power orharidi i 

